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<a name="gst-plugins-base-plugins-theoraparse"></a><div class="titlepage"></div>
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<td valign="top">
<h2><span class="refentrytitle"><a name="gst-plugins-base-plugins-theoraparse.top_of_page"></a>theoraparse</span></h2>
<p>theoraparse</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<a name="GstTheoraParse"></a><div class="refsect1">
<a name="gst-plugins-base-plugins-theoraparse.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody><tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="gst-plugins-base-plugins-theoraparse.html#GstTheoraParse-struct" title="struct GstTheoraParse">GstTheoraParse</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-theoraparse.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a>
    <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
        <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a>
            <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a>
                <span class="lineart">╰──</span> GstTheoraParse
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-theoraparse.description"></a><h2>Description</h2>
<p>The theoraparse element will parse the header packets of the Theora
stream and put them as the streamheader in the caps. This is used in the
multifdsink case where you want to stream live theora streams to multiple
clients, each client has to receive the streamheaders first before they can
consume the theora packets.</p>
<p>This element also makes sure that the buffers that it pushes out are properly
timestamped and that their offset and offset_end are set. The buffers that
theoraparse outputs have all of the metadata that oggmux expects to receive,
which allows you to (for example) remux an ogg/theora file.</p>
<p>In addition, this element allows you to fix badly synchronized streams. You
pass in an array of (granule time, buffer time) synchronization points via
the synchronization-points GValueArray property, and this element will adjust
the granulepos values that it outputs. The adjustment will be made by
offsetting all buffers that it outputs by a specified amount, and updating
that offset from the value array whenever a keyframe is processed.</p>
<div class="refsect3">
<a name="id-1.2.101.6.5"></a><h4>Example pipelines</h4>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1</pre></td>
        <td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch<span class="gtkdoc opt">-</span><span class="number">1.0</span> <span class="gtkdoc opt">-</span>v filesrc location<span class="gtkdoc opt">=</span>video<span class="gtkdoc opt">.</span>ogg <span class="gtkdoc opt">!</span> oggdemux <span class="gtkdoc opt">!</span> theoraparse <span class="gtkdoc opt">!</span> fakesink</pre></td>
      </tr>
    </tbody>
  </table>
</div>

<p>
 This pipeline shows that the streamheader is set in the caps, and that each
buffer has the timestamp, duration, offset, and offset_end set.</p>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1
2</pre></td>
        <td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch<span class="gtkdoc opt">-</span><span class="number">1.0</span> filesrc location<span class="gtkdoc opt">=</span>video<span class="gtkdoc opt">.</span>ogg <span class="gtkdoc opt">!</span> oggdemux <span class="gtkdoc opt">!</span> theoraparse \
           <span class="gtkdoc opt">!</span> oggmux <span class="gtkdoc opt">!</span> filesink location<span class="gtkdoc opt">=</span>video<span class="gtkdoc opt">-</span>remuxed<span class="gtkdoc opt">.</span>ogg</pre></td>
      </tr>
    </tbody>
  </table>
</div>

<p>
 This pipeline shows remuxing. video-remuxed.ogg might not be exactly the same
as video.ogg, but they should produce exactly the same decoded data.</p>
</div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="id-1.2.101.6.6.1"></a><h3>Element Information</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">plugin</span></p></td>
<td>
            <a class="link" href="gst-plugins-base-plugins-plugin-theora.html#plugin-theora">theora</a>
          </td>
</tr>
<tr>
<td><p><span class="term">author</span></p></td>
<td>Andy Wingo &lt;wingo@pobox.com&gt;</td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Codec/Parser/Video</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="id-1.2.101.6.6.2"></a><h3>Element Pads</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>video/x-theora</td>
</tr>
</tbody>
</table></div>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>src</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>source</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>video/x-theora</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-theoraparse.functions_details"></a><h2>Functions</h2>
<p></p>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-theoraparse.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstTheoraParse-struct"></a><h3>struct GstTheoraParse</h3>
<pre class="programlisting">struct GstTheoraParse;</pre>
<p>Opaque data structure.</p>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-theoraparse.see-also"></a><h2>See Also</h2>
<p>theoradec, oggdemux, vorbisparse</p>
</div>
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